OLED (Organic Light Emitting Diode) display device and OLED display device

Abstract

The invention provides an OLED (Organic Light Emitting Diode) display device and an OLED display device. The OLED display device comprises a first electrode (2), an organic layer (3), a second electrode (5), and a stable layer (4) clamped between the second electrode (5) and the organic layer (3) or between the first electrode (2) and the organic layer (3) which are sequentially stacked from bottom to top. The stable layer (4) is formed by rare earth metal or a mixture of the rare earth metal and inorganic salt, so that the stability of an electrode thin film can be maintained, and the reliability of the OLED display device is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display device and an OLED display device. Background technique [0002] Organic Light Emitting Diode (OLED) display devices have self-illumination, low driving voltage, high luminous efficiency, short response time, high definition and contrast, nearly 180° viewing angle, wide operating temperature range, and can realize flexible display and With many advantages such as large-area full-color display, it is suitable for wearable electronic devices, smart phones, flexible display devices, etc. [0003] Such as figure 1 As shown, the existing OLED display device generally includes: a substrate 100, an anode 200 placed on the substrate 100, an organic layer 300 placed on the anode 200, a cathode 400 placed on the organic layer 300, and a cathode 400 placed on the cathode 400 encapsulation layer 500. Wherein, the organic layer 300 includes a hole injection layer (HIL) 301...

AI Technical Summary

Problems solved by technology

For the top-emission OLED display device with the cathode as the reflective electrode, because the cathode needs to scatter or absorb light, silver (Ag) with low light absorption rate and high reflection or transmittance is usually used, but the thickness of the cathode film is relatively large. Thin and relatively low reliability; coupled with the influence of ultraviolet (UV) in external sunlight, and the increase in TFT density as the clarity becomes higher and higher, etc., when the cathode is in UV and high temperature environment for a long time, metal Agglomeration and cracking of OLED display devices will reduce the reliability of OLED display devices, and in severe cases, pixel shrinkage will also occur

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